JP5240425B2 - Mower - Google Patents

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Publication number
JP5240425B2
JP5240425B2 JP2007318370A JP2007318370A JP5240425B2 JP 5240425 B2 JP5240425 B2 JP 5240425B2 JP 2007318370 A JP2007318370 A JP 2007318370A JP 2007318370 A JP2007318370 A JP 2007318370A JP 5240425 B2 JP5240425 B2 JP 5240425B2
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cutting
deck
scraping plate
scraping
turfgrass
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JP2009136242A (en
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宣弘 井手
強志 山下
聡 森田
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ATECS CORP
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ATECS CORP
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この発明は、刈取デッキ内の刈取られる芝草の排出を円滑に行わせる草刈機に関する。   The present invention relates to a mower that smoothly discharges turf grass that is cut in a cutting deck.

左右一対の刈取軸を軸装する刈取デッキの後側を開放して、刈取られた芝草を直後方へ排出させる技術（例えば、特許文献１参照）が知られている。
特開２００７−６０９６０号公報 A technique (see, for example, Patent Document 1) in which the rear side of a cutting deck that equips a pair of left and right cutting shafts is opened and the cut turfgrass is discharged immediately afterward is known.
JP 2007-60960 A

刈取デッキの下面中央部で、左右一対の刈取軸間にあっては、刈取られた芝草の一部が停滞して、後方等の排出口部への放出性が悪く、詰り易く、刈取性能を低下させ易い。   In the middle of the bottom surface of the cutting deck, between the pair of left and right cutting shafts, part of the cut turfgrass is stagnant, and the release to the discharge port, such as the rear, is poor, clogging is easy, and the cutting performance is reduced. easy.

請求項１に記載の発明は、平面視前側が内方へ向け相対向回転する左右一対の刈取軸２に刈刃１を設け、該左右の刈刃１の上方に、刈取デッキ３の下側面に接近し、刈取軸２と一体回転する掻出板５を設け、該掻出板５は、刈刃１の回転径と略同径の円形状に形成し、その下面には掻出リブ４を形成するとともに、左右の掻出板５の回転外周縁を刈取デッキ３の中央部で対向接近して回転するよう構成したことを特徴とする草刈機とする。刈刃１の回転によって刈取られる芝草は刈取デッキ３の下側部を後方等の排出口部へ向けて放出されるが、この刈取デッキ３の下側面に接近する芝草は、刈刃１と一体回転の掻出板５の掻出リブ４によって、下側へ離すようにして掻出される。そして、刈取芝草が刈取デッキ３の天井部に停滞しようとするのを防止する。 The invention according to claim 1, the cutting blade 1 provided in the cutting shaft 2 a pair of right and left are viewed front to toward phase opposite rotation inward, above the left and right cutting blade 1, reaper underside of the deck 3 A scraping plate 5 is provided, which rotates close to the cutting shaft 2 and rotates integrally with the cutting shaft 2. The scraping plate 5 is formed in a circular shape having the same diameter as the rotational diameter of the cutting blade 1, and the scraping rib 4 is formed on the lower surface thereof. , And the rotating outer peripheral edges of the left and right scraping plates 5 are configured to rotate opposite to each other at the center of the cutting deck 3. The turfgrass cut by the rotation of the cutting blade 1 is discharged with the lower side of the cutting deck 3 toward the discharge port such as rearward. The turfgrass approaching the lower side of the cutting deck 3 is integrated with the cutting blade 1. The scraping rib 4 of the rotating scraping plate 5 is scraped away from the lower side. Then, the mowing turf grass is prevented from stagnating in the ceiling portion of the mowing deck 3.

請求項１に記載の発明は、刈刃１と一体回転の掻出板５の回転によって、刈取デッキ３の下側面に付着停滞しようとする芝草を、この下方へ離すように掻出して放出させ、芝草刈取の詰りをなくし、円滑な排出作用を行わせて、刈取性能を高めることができる。又、掻出板５は掻出リブ４を形成するも比較的薄い形態に構成されるため、刈取デッキ３の下面に接近させて構成しても、下側の刈刃１との間の高さ間隔を十分に維持することができ、刈取デッキ３の高さを低く維持して刈取性能を高く維持することができる。   According to the first aspect of the present invention, turfgrass that adheres to and stagnate on the lower surface of the cutting deck 3 is scraped away and released by the rotation of the scraping plate 5 that rotates integrally with the cutting blade 1. It is possible to eliminate clogging of turfgrass cutting and to perform a smooth discharging action to improve cutting performance. Further, since the scraping plate 5 is formed in a relatively thin shape even though the scraping rib 4 is formed, even if the scraping plate 5 is configured to be close to the lower surface of the cutting deck 3, the scraping plate 5 is not connected to the lower cutting blade 1. The height interval can be sufficiently maintained, and the height of the cutting deck 3 can be maintained low, and the cutting performance can be maintained high.

図例に基づいて、車体９後方の車輪７を有して後部に搭載のエンジン８により駆動して走行できる車体９の前側に刈取デッキ３を装着する。車体９にはエンジン８から伝動される出力プーリ１０を設け、この出力プーリ１０と刈取デッキ３上の入力プーリ１１との間にベルト１２を掛け渡して、この刈取デッキ３に軸装の刈取軸２を回転伝動することができる。この刈取デッキ３の前方中央部には、支持アーム１３を突出させて、前端部に回転自在の支持輪１４を設ける。又、車体９の後方上部にハンドル１５を設け、このハンドル１５の基部をハンドルブラケット１６に対して、上下に回動可能で、左右一定回動域に回動可能に取付けている。   Based on the illustrated example, the cutting deck 3 is mounted on the front side of the vehicle body 9 that has a wheel 7 behind the vehicle body 9 and can be driven by an engine 8 mounted on the rear part. The vehicle body 9 is provided with an output pulley 10 that is transmitted from the engine 8, and a belt 12 is stretched between the output pulley 10 and an input pulley 11 on the cutting deck 3, and the cutting deck 3 is mounted on the cutting deck 3. 2 can be rotationally transmitted. A support arm 13 is projected from the front center portion of the cutting deck 3 and a rotatable support wheel 14 is provided at the front end. A handle 15 is provided at the rear upper part of the vehicle body 9, and a base portion of the handle 15 is pivotable up and down with respect to the handle bracket 16 and is pivotably attached to a left and right constant pivot area.

ここにおいて、平面視前側が内方へ向け相対向回転する左右一対の刈取軸２に刈刃１を設け、該左右の刈刃１の上方に、刈取デッキ３の下側面に接近し、刈取軸２と一体回転する掻出板５を設け、該掻出板５は、刈刃１の回転径と略同径の円形状に形成し、その下面には掻出リブ４を形成するとともに、左右の掻出板５の回転外周縁を刈取デッキ３の中央部で対向接近して回転するよう構成したことを特徴とする草刈機とする。刈刃１の回転によって刈取られる芝草は刈取デッキ３の下側部を後方等の排出口部へ向けて放出されるが、この刈取デッキ３の下側面に接近する芝草は、刈刃１と一体回転の掻出板５の掻出リブ４によって、下側へ離すようにして掻出される。そして、刈取芝草が刈取デッキ３の天井部に停滞しようとするのを防止する。 Here, the cutting blade 1 provided in the cutting shaft 2 a pair of right and left are viewed front to toward phase opposite rotation inward, closer to the upper left and right cutting blade 1, the lower surface of the cutting deck 3, reaper axis 2 is provided, and the scraping plate 5 is formed in a circular shape having substantially the same diameter as the rotational diameter of the cutting blade 1, and a scraping rib 4 is formed on the lower surface thereof. The mowing machine is characterized in that the rotating outer peripheral edge of the scraping plate 5 is rotated so as to face and approach the central portion of the cutting deck 3. The turfgrass cut by the rotation of the cutting blade 1 is discharged with the lower side of the cutting deck 3 toward the discharge port such as rearward. The turfgrass approaching the lower side of the cutting deck 3 is integrated with the cutting blade 1. The scraping rib 4 of the rotating scraping plate 5 is scraped away from the lower side. Then, the mowing turf grass is prevented from stagnating in the ceiling portion of the mowing deck 3.

又、前記掻出板５とこの下側の刈刃１との間に、刈取軸２の外周部を囲繞する大径の巻付防止筒６を設けてある。刈刃１によって刈取られる芝草は、一部刈取デッキ３の下側面部に付着、停滞しようとすると、掻出板５の掻出リブ４によって、下方等へ掻き出されて、円滑な芝草放出作用が行われる。このとき一部の芝草が刈取軸２周りに付き回りしようとすると、大径の巻付防止筒６の回転によって、この巻付が阻止される。しかも、この巻付防止筒６によって巻付くことができない芝草は、上側天井部の掻出板５の掻出リブ４の作用を受けて下方等へ掻出されるため、この刈取デッキ３天井面への付着停滞を防止する。   A large-diameter winding prevention cylinder 6 is provided between the scraping plate 5 and the lower cutting blade 1 to surround the outer periphery of the cutting shaft 2. The turfgrass cut by the cutting blade 1 partially adheres to the lower side of the cutting deck 3 and is stagnated by the scraping ribs 4 of the scraping plate 5 so as to smoothly release the turfgrass. Is done. At this time, when a part of the turf grass tries to wrap around the cutting shaft 2, the winding is prevented by the rotation of the large-diameter winding preventing cylinder 6. Moreover, turfgrass that cannot be wound by the winding prevention cylinder 6 is scraped downward under the action of the scraping rib 4 of the scraping plate 5 of the upper ceiling portion, so that the cutting deck 3 ceiling surface Prevent stagnation of adhesion.

前記刈取デッキ３は、左右一対の刈取軸２を軸装して、相対向する側に回転するように上側の伝動ケース１７内のベルト１２によって伝動回転させる。各刈取軸２の下端部と、これより適宜間隔高い中段部とに、回転位相を変えて刈刃１を配置している。前記掻出板５は、これら下方の刈刃１の回転径と略同径の円形状に形成し、この外周部には下側面に突出の排出リブ４を形成する。この掻出板５は、刈取軸２の上端部に取付けて、刈刃２と一体回転するもので、回転面を刈取デッキ３の下側面に接近させている。又、これた左右刈取軸２に取付けた掻出板５の回転外周縁は、刈取デッキ３の中央部で対向接近して回転する構成としている。   The harvesting deck 3 is mounted with a pair of left and right harvesting shafts 2 and is transmitted and rotated by the belt 12 in the upper transmission case 17 so as to rotate to opposite sides. The cutting blade 1 is arranged with the rotational phase changed between the lower end portion of each cutting shaft 2 and a middle step portion that is appropriately higher than this. The scraping plate 5 is formed in a circular shape having substantially the same diameter as the rotational diameter of the lower cutting blade 1, and a discharge rib 4 protruding on the lower surface is formed on the outer peripheral portion. The scraping plate 5 is attached to the upper end portion of the cutting shaft 2 and rotates integrally with the cutting blade 2, and the rotating surface is brought close to the lower surface of the cutting deck 3. Further, the rotation outer peripheral edge of the scraping plate 5 attached to the left and right reaping shafts 2 is configured to rotate oppositely and approaching at the central portion of the reaping deck 3.

これら左右両側の刈取軸２の外周部には、適宜大径の巻付防止筒６，１８を設けて、刈取軸２や、刈刃１、及び掻出板５等を一体回転させる。巻付防止筒６は、中段部の刈刃１と上端部の掻出板５との間の間隔部に設けられ、下部の巻付防止筒１８は、下端部と中段部の刈刃１間隔部に設けられて、各々刈取られた芝草等が取付軸２周りに巻付くのを阻止するものである。
前記刈取デッキ３の前側面は開放して芝草を案内する案内口２０を形成し、この前側中央部に案内杆１９を設ける。又、刈取デッキ３の後方に刈取芝草排出の排出口２１を形成して、後側の左右車輪７間に排出することができる。 Appropriately large-diameter wrapping preventing cylinders 6 and 18 are provided on the outer peripheral portions of the right and left cutting shafts 2 so that the cutting shaft 2, the cutting blade 1, the scraping plate 5 and the like are integrally rotated. The anti-winding cylinder 6 is provided in a gap between the middle cutting blade 1 and the scraping plate 5 at the upper end, and the lower anti-winding cylinder 18 is provided between the lower cutting edge and the middle cutting blade 1. The turfgrass or the like that has been cut off is provided around the mounting shaft 2 and is prevented from being wound around the mounting shaft 2.
The front side of the cutting deck 3 is opened to form a guide port 20 for guiding turfgrass, and a guide rod 19 is provided at the front center. Further, a cutout turfgrass discharge outlet 21 is formed at the rear of the cutting deck 3 so that it can be discharged between the rear left and right wheels 7.

車体９を前進させながら刈刃軸２の回転によって芝草の刈取を行う。左右両側の刈刃１によって刈取られる芝草は、中央部から後方の排出口２１へ向けて排出される。この刈取中に刈取デッキ３の下側面にそって浮上される芝草は、この刈取デッキ３の下側面に接近して回転する掻出板５に受けられて、刈取デッキ３の下側面との間への芝草の浸入を阻止して、掻出リブ４によって掻落される。このため、掻出板５の下側面に沿って停滞しようとする芝草を掻き出して、後方の排出口２１へ排出させる。又、この下側の刈取軸２の回転外周部には巻付防止筒６が回転して、芝草の刈取軸２上部への巻付を阻止すると共に、この巻付防止筒６から外れて上側の掻出板５の回転域へ浮上される芝草が、この掻出板５の回転の回転によって掻落し、乃至放出されて、刈取芝草の排出を速やかに行うことができる。このため、刈取能率を上げて、刈取デッキ３の案内口２０から多量の芝草を案内させても、刈取られた芝草の刈取デッキ３の裏面での停滞、詰り等を少なくすることができ、刈取性能を高めることができる。   Turf grass is cut by rotating the cutting blade shaft 2 while moving the vehicle body 9 forward. Turf grass mowed by the cutting blades 1 on both the left and right sides is discharged from the central part toward the rear discharge port 21. Turf grass that floats along the lower side of the cutting deck 3 during the cutting is received by a scraping plate 5 that rotates close to the lower side of the cutting deck 3 and is positioned between the lower side of the cutting deck 3. It is scraped off by the scraping rib 4 while preventing the turfgrass from entering. For this reason, the turf grass which is going to stagnate along the lower surface of the raking plate 5 is scraped off and discharged to the rear discharge port 21. Further, the winding preventing cylinder 6 rotates on the rotation outer peripheral portion of the lower cutting shaft 2 to prevent the turfgrass from being wound around the upper portion of the cutting shaft 2 and is separated from the winding preventing cylinder 6 to the upper side. The turfgrass that floats to the rotation region of the scraping plate 5 is scraped or released by the rotation of the scraping plate 5, so that the cut turfgrass can be discharged quickly. Therefore, even if the cutting efficiency is increased and a large amount of turfgrass is guided from the guide port 20 of the cutting deck 3, stagnation and clogging of the cut turfgrass on the back of the cutting deck 3 can be reduced. Performance can be increased.

このように掻出リブ４は掻出板５の下側面に突出形成されるため、付着しようとする芝草を下方へ押し下げるようにして飛散させるものであるから、この掻出板５の回転と共に、芝草が刈取デッキ３の下側面に対する付着停滞を阻止する。又、図例の掻出リブ４は掻出板５を押出成形したものであるが、この掻出リブ４に代えて、短い丸棒材や、板材片等を掻出板５の下側面に固着する構成とすることもできる。又、掻出板５は掻出リブ４を形成するも比較的薄い形態に構成されるため、刈取デッキ３の下側面に接近させて構成しても、下側の刈刃１との間の高さ間隔を十分に維持することができ、刈取デッキ３の高さを低く維持して刈取性能を高く維持することができる。   Thus, the scraping rib 4 is formed so as to protrude on the lower surface of the scraping plate 5, so that the turf grass to be attached is scattered so as to be pushed downward. As the scraping plate 5 rotates, Turf grass prevents stagnation of adhesion to the lower surface of the cutting deck 3. Further, the scraping rib 4 in the example is formed by extruding the scraping plate 5, but instead of the scraping rib 4, a short round bar, a plate material piece or the like is provided on the lower surface of the scraping plate 5. It can also be set as the structure which adheres. Further, since the scraping plate 5 is formed in a relatively thin shape even though the scraping rib 4 is formed, even if the scraping plate 5 is configured to be close to the lower surface of the cutting deck 3, it is between the lower cutting blade 1. The height interval can be maintained sufficiently, and the height of the cutting deck 3 can be maintained low, and the cutting performance can be maintained high.

刈取デッキ部の平面図と、正面図。The top view and front view of a cutting deck part. 草刈機の平面図。Top view of a mower. 草刈機の側面図。A side view of a mower.

１ 刈刃
２ 刈取軸
３ 刈取デッキ
４ 掻出リブ
５ 掻出板
６ 巻付防止筒 DESCRIPTION OF SYMBOLS 1 Cutting blade 2 Cutting shaft 3 Cutting deck 4 Scraping rib 5 Scraping plate 6 Winding prevention cylinder

Claims (1)

平面視前側が内方へ向け相対向回転する左右一対の刈取軸（２）に刈刃（１）を設け、該左右の刈刃（１）の上方に、刈取デッキ（３）の下側面に接近し、刈取軸（２）と一体回転する掻出板（５）を設け、該掻出板（５）は、刈刃（１）の回転径と略同径の円形状に形成し、その下面には掻出リブ（４）を形成するとともに、左右の掻出板（５）の回転外周縁を刈取デッキ（３）の中央部で対向接近して回転するよう構成したことを特徴とする草刈機。 A cutting blade (1) is provided on a pair of left and right cutting shafts (2) whose front sides in plan view rotate opposite to each other inward, and above the left and right cutting blades (1) , on the lower surface of the cutting deck (3). A scraping plate (5) that approaches and rotates integrally with the cutting shaft (2) is provided, and the scraping plate (5) is formed in a circular shape having substantially the same diameter as the rotational diameter of the cutting blade (1). A raking rib (4) is formed on the lower surface, and the rotation outer peripheral edges of the left and right scraping plates (5) are configured to rotate while facing each other at the center of the cutting deck (3). Mower.
JP2007318370A 2007-12-10 2007-12-10 Mower Expired - Fee Related JP5240425B2 (en)

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JP5240425B2 true JP5240425B2 (en) 2013-07-17

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US4364221A (en) * 1981-07-02 1982-12-21 Wixom Marvin J Lawn mower
JPS6131012A (en) * 1984-07-23 1986-02-13 本田技研工業株式会社 Grass scrape-out apparatus of power lawn mower
JP3529279B2 (en) * 1998-09-24 2004-05-24 株式会社クボタ Moore
JP3632530B2 (en) * 1999-11-10 2005-03-23 松下電工株式会社 Lawn mower
JP3494290B2 (en) * 2000-05-25 2004-02-09 株式会社アテックス Cutting blade drive mechanism of self-propelled mower

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